 Home |
Products |
Support |
Community |
News |
xen-devel
Re: [Xen-devel] [PATCH 0/6] MSI-INTx interrupt translation for HVM
| To: | Qing He <qing.he@xxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH 0/6] MSI-INTx interrupt translation for HVM |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Mon, 02 Mar 2009 09:40:40 +0000 |
| Cc: | "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Shohei Fujiwara <fujiwara-sxa@xxxxxxxxxxxxxxx> |
| Delivery-date: | Mon, 02 Mar 2009 01:41:10 -0800 |
| Envelope-to: | www-data@xxxxxxxxxxxxxxxxxxx |
| In-reply-to: | <20090302092440.GA22064@ub-qhe2> |
| List-help: | <mailto:xen-devel-request@lists.xensource.com?subject=help> |
| List-id: | Xen developer discussion <xen-devel.lists.xensource.com> |
| List-post: | <mailto:xen-devel@lists.xensource.com> |
| List-subscribe: | <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe> |
| List-unsubscribe: | <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe> |
| Sender: | xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
| Thread-index: | AcmbGI0dWkRLLz2+Tfi8U8t8x7GV6gAAmWWf |
| Thread-topic: | [Xen-devel] [PATCH 0/6] MSI-INTx interrupt translation for HVM |
| User-agent: | Microsoft-Entourage/12.15.0.081119 |
On 02/03/2009 09:24, "Qing He" <qing.he@xxxxxxxxx> wrote: >> Ah, well the passthrough-specific logic is not something I'm so familiar >> with! That above code indeed doesn't look correct. :-) > > I recently learned that some device may keep issuing MSI until it is > explicitly > cleared by software. In that case it just behaves like level-triggered > interrupt, and doing something like the code above will cause interrupt storm. > This is reflected in cs. 19065. > > Do you mean this issue? That would be the expected result of early EOI, yes. But Shohei was walking about losing interrupts. I don't know how we would do that. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | [Xen-devel] Re: [PATCH] xen: core dom0 support, Gerd Hoffmann |
|---|---|
| Next by Date: | Re: [Xen-devel] [rfc 00/18] ioemu: use devfn instead of slots as the unit for passthrough, Simon Horman |
| Previous by Thread: | Re: [Xen-devel] [PATCH 0/6] MSI-INTx interrupt translation for HVM, Qing He |
| Next by Thread: | Re: [Xen-devel] [PATCH 0/6] MSI-INTx interrupt translation for HVM, Shohei Fujiwara |
| Indexes: | [Date] [Thread] [Top] [All Lists] |
